Our Sister Galaxy Was Eaten By The Andromeda Galaxy

Which is the closest among everywhere? "The combination of simulation techniques and observations is beautifully executed to try and get at the truth of an event that happened billions of years ago".

What does science say about the Milky Way? Has left behind a trail of evidence.

According to the researchers, this dominant-merger scenario also explains why Andromeda has a massive population of metal-rich, intermediate-age stars in its stellar halo, which would not be the case if the galaxy underwent sporadic bursts of star formation during multiple small mergers. Bell and Susa revealed that the "homeland" majority are one and the same large galaxy received code М32р. And also a separate compact galaxy M32.

Messier 32p would have been massive, making it the third largest galaxy in the Local Group after the Andromeda and the Milky Way galaxies. Which has been disrupted? The galaxy, labeled M32 in its current form by astronomers, now hangs out in the outskirts of the larger Andromeda galaxy, but it's just a shadow of what researchers believe it used to be.

Rebuild the Sibling of Milky Way.

. Scientists already knew that Andromeda was a savage galaxy responsible for the destruction of hundreds of other galaxies, but by using new computer simulations, the U of M team (Richard D'Souza and Eric Bell) were able to determine that most of stars in the halo around the cannibal are from one large galaxy. Which revealed the long-lost sibling of the Milky Way. Being such a large galaxy, Andromeda was surrounded by smaller galaxies.

According to the researchers, "M32 is a rare case, there is no other galaxy like it". Scientists thought this would make it hard to learn about any single one of them. The majority of the stolen mass went into forming M31's faint stellar halo, and the more concentrated, elongated structure of the giant stellar stream. Is there because of shredding of smaller companies of Andromeda.

The new study, which was published online today (July 23) in the journal Nature Astronomy, should help scientists better understand the evolution and effects of galaxy mergers, D'Souza and Bell said.

"It was a "eureka" moment", D'Souza said. "We realized we could use this information of Andromeda's outer stellar halo to infer the properties of the largest of these shredded galaxies".

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